(all photographs by J. Gerencher)
Snow forms as a solid in the atmosphere directly from the deposition of water vapor, a process called sublimation. The snow flakes then fall earthward, sometimes reaching the surface, or evaporating on the way down, or melting to form raindrops.
Snow streaks from cirrus cloud. The snow evaporates
(sublimates) as it falls, so it never reaches the ground.
Viewed from Bethlehem, PA.
Heavy snowfall on Gerencher home.
Light snowfall slides off glass skylights as a sheet
on roof of Gerencher home.